With Service Pack 2 installed, Window XP has proven to be a notably durable and reasonably secure version of the operating system. The August 2004 release of SP2 dramatically upgraded the security of the original XP, adding the Windows Firewall and Windows Defender, along with easily configurable options to block or allow specific kinds of traffic into your system. Since SP2 came out, Microsoft has continued to supply fixes and enhancements via Windows (and Microsoft) Updates. For the most part, Windows XP Service Pack 3 simply rolls all the fixes and upgrades into a single convenient package, though there are a few brand-new additions with SP3. Whether the new additions catch your eye or not, security upgrades make applying the service pack a good idea—but make sure you know about possible compatibility issues (detailed later in this review) ... read

As noted here, MS made availible to all the RC of XP SP3 tonight on its downloads website. Havnt got it yet myself but let us know what you think if anyone else gets it and installs it. Anything of note besides "It works better than vista".